0279.400H [LITTELFUSE]
Electric Fuse, Very Fast Blow, 0.4A, 125VAC, 125VDC, 10000A (IR), Through Hole, MICRO,;
| 型号： | 0279.400H |
| 厂家： | 
LITTELFUSE |
| 描述： | Electric Fuse, Very Fast Blow, 0.4A, 125VAC, 125VDC, 10000A (IR), Through Hole, MICRO, 电路保护 |
| 文件： | 总3页 (文件大小：1829K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Radial Lead Fuses
MICRO™ > Very Fast-Acting > 272/273/274/278/279 Series
QPL
272/273/274/278/279 Series, MICRO™ Very Fast-Acting Fuse
Description
Developed originally for the U.S. Space Program,
MICRO™ fuse provides reliability in a compact design.
The MICRO™ fuse is available in plug–in or radial lead
styles and a complete range of ampere ratings from
1/500 to 5A to suit a wide variety of design needs.
Features
•ꢀ Military grade available
•ꢀ High breaking capacity
•ꢀ Available from very low
ampere of 2mA to 5A
•ꢀ Plug-in with short or long
•ꢀ Clear cover option to view
leads option
fuse element status
Agency Approvals
Agency
Agency File Number
Ampere Range
Applications
E10480
LR 29862
FM02
2mA - 5A
•ꢀ Printed circuit boards
•ꢀ Electronic components
and similar equipment
2mA - 5A
2mA - 5A
Electrical Characteristics
QPL
% of Ampere
Rating
Ampere Rating
1/500–5
OpeningTime
100%
4 Hours, Min.
5 Seconds, Max.
2 Seconds, Max.
1/500–3/10
4/10-5
200%
Electrical Characteristics
Amp Code
Ampere
Rating
(A)
ꢀax
Nominal
Agency Approvals
Nominal
ꢀelting
(for all
above
series)
.002
.005
.010
Voltage
Rating
(V)
Interrupting
Rating
Cold
Resistance
(Ohms)
2200
I2t (A2 sec)
QPL
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
.002
.005
.010
.015
.031
.050
.062
.100
.125
.200
.250
.300
.400
.500
.600
.700
.750
.800
1.00
01.5
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
0.00000000845
0.00000000810
0.000000462
0.00000123
0.00000810
0.0000666
0.000115
0.000385
0.000691
0.00409
0.00640
0.00945
0.0251
280
80.0
44.0
16.0
3.20
2.32
1.25
1.0
.015
.031
.050
.062
.100
.125
.200
.250
.300
.400
.500
.600
.700
.750
.800
001.
2.30
1.75
1.25
10,000 amperes at
125 VAC/VDC.
0.227
0.167
0.430
0.324
0.293
0.271
0.0880
0.0578
0.0425
0.0275
0.0202
0.0156
0.0716
0.0411
0.0710
0.0900
0.113
0.0648
0.160
0.300
01.5
2.00
3.00
4.00
5.00
002.
003.
004.
005.
0.759
1.38
2.21
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Radial Lead Fuses
MICRO™ > Very Fast-Acting > 272/273/274/278/279 Series
Temperature Rerating Curve
AverageTime Current Curves
100
10
1
0.1
0.01
0.001
0.005
0.01
0.1
1
10
100
CURRENT IN AMPERES
Soldering Parameters -Wave Soldering
300
280
260
240
220
200
180
160
140
120
100
80
Recommended Process Parameters:
Wave ꢁarameter
ꢁreheat:
(Depends on Flux ActivationTemperature)
Temperature Minimum:
Temperature Maximum:
PreheatTime:
ꢂead-Free Recommendation
(Typical Industry Recommendation)
100° C
150° C
60-180 seconds
Solder ꢁotTemperature:
Solder DwellTime:
260° C Maximum
2-5 seconds
60
40
20
0
Recommended Hand-Solder Parameters:
Time (Seconds)
Solder IronTemperature: 350° C +/- 5°C
HeatingTime: 5 seconds max.
Preheat Time
Dwell Time
Cooling Time
Note:These devices are not recommended for IR or
Convection Reflow process.
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Radial Lead Fuses
MICRO™ > Very Fast-Acting > 272/273/274/278/279 Series
Dimensions
Product Characteristics
Operating Temperature:
272 000 Series
(Short ꢂead, ꢀetal Cap)
273 and 279: –55ºC to +85ºC;
272 and 278: –55ºC to +125ºC
5.97
(.235")
7.30
(.29")
4.32
273 Series is available in CSA LR
29862. Military QPL type (FM02).
To order, change 273 to 274.
(.17")
Fuses to MIL SPEC
Materials
2.54 (.10")
272 and 278 series cap:
Nickel Plated Brass
278 000 Series
273, 274 and 279 series cap:
Mirror polished Polycarbonate
(ꢂong ꢂead, ꢀetal Cap)
5.97
7.30
Base: R-4 Ryton
(.235")
(.29")
25.4 (1.0")
Pins: Tin Plated Copper
2.54 (.10")
Current and voltage ratings stamped
on cap
Product Marking
273 000 and 274 000 Series
(Short ꢂead, Clear ꢁlastic Cap)
Part Numbering System
6.35
(.25")
8.89
(.35")
4.32
0273 xxxx V
(.17")
Series
2.54 (.10")
Amp. Code
Refer to Amp Code column of
279 000 Series
Electrical CharacteristicsTable
(ꢂong ꢂead, Clear ꢁlastic Cap)
6.35
Packaging Code
V = 5
H = 100
8.89
(.35")
(.25")
25.4 (1.0")
2.54 (.10")
Additional Information
NOTꢃ: Amperage and voltage rating stamped on cap.
ꢂeads are tin plated copper; .025" diameter.
Datasheet
272 Series
Resources
272 Series
Samples
272 Series
Packaging
Quantity &
ꢁackaging
Code
ꢁackaging
Option
ꢁackaging
Specification
Quantity
Datasheet
273 Series
Resources
273 Series
Samples
273 Series
Bulk
Bulk
N / A
N / A
5
V
100
H
Datasheet
274 Series
Resources
Samples
274 Series
274 Series
Datasheet
278 Series
Resources
278 Series
Samples
278 Series
Datasheet
279 Series
Resources
279 Series
Samples
279 Series
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
相关型号：
0279.500H
Electric Fuse, Very Fast Blow, 0.5A, 125VAC, 125VDC, 10000A (IR), Through Hole, MICRO,
LITTELFUSE
0279.600H
Electric Fuse, Very Fast Blow, 0.6A, 125VAC, 125VDC, 10000A (IR), Through Hole, MICRO,
LITTELFUSE
0279.700H
Electric Fuse, Very Fast Blow, 0.7A, 125VAC, 125VDC, 10000A (IR), Through Hole, MICRO,
LITTELFUSE
0279.750H
Electric Fuse, Very Fast Blow, 0.75A, 125VAC, 125VDC, 10000A (IR), Through Hole, MICRO,
LITTELFUSE
0279.800H
Electric Fuse, Very Fast Blow, 0.8A, 125VAC, 125VDC, 10000A (IR), Through Hole, MICRO,
LITTELFUSE
©2020 ICPDF网 联系我们和版权申明